In 1954 a complete Go board made out of stone was found in a tomb dating to the Eastern Han Dynasty (25-220) in Wangdu County, Hebei Province. This board has a 17 × 17 grid, which confirms the statement by the 3rd century author Handan Chun in the Classic of Arts that Go was at this time played on a 17 × 17 grid.

Clinton and Gingrich were certainly high enough to know state secrets. I'm sure Petraeus knew more based on the nature of his position. The potential of blackmail or exploitation by foreign agents is there in the Petraeus case, but not so much when you're the President.

I think the Republicans knew they had dirt on Clinton and they tried so desperately to catch him but those perjury charges didn't stick. Clinton thought he could beat the charges and didn't resign.